The Hamming distance between two integers is the number of positions at which the corresponding bits are different.
Given two integers x
and y
, calculate the Hamming distance.
Note:
0 ≤ x
, y
< 231.
Example:
Input: x = 1, y = 4
Output: 2
Explanation:
1 (0 0 0 1)
4 (0 1 0 0)
↑ ↑
The above arrows point to positions where the corresponding bits are different.
public int hammingDistance(int x, int y) {
int result = 0;
int r = x^y;
for (int i=0;i<32;i++){
result+=(r>>i)&1;
}
return result;
}